Balloons

Evidence

Ran on Kiln's test stand (2026-11-04): Balloons did not start: java.lang.NoClassDefFoundError: net/minecraft/core/component/DataComponentType$Builder.

What it needs from Kiln

• Mixin
• net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback
• net.fabricmc.fabric.api.entity.event.v1.ServerLivingEntityEvents
• net.fabricmc.fabric.api.entity.event.v1.ServerLivingEntityEvents.AfterDeath
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerEntityEvents.EquipmentChange
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents.ServerStarted
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents.ServerStarting
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents.StartDataPackReload
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerTickEvents
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerTickEvents.EndTick
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents.Disconnect
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents.Join
• net.minecraft.commands.CommandSourceStack
• net.minecraft.commands.Commands
• net.minecraft.commands.Commands.CommandSelection
• net.minecraft.commands.arguments.EntityArgument
• net.minecraft.commands.arguments.IdentifierArgument
• net.minecraft.core.RegistryAccess
• net.minecraft.core.RegistryAccess.Frozen
• net.minecraft.core.component.DataComponentMap
• net.minecraft.core.component.DataComponentType
• net.minecraft.core.component.DataComponentType.Builder
• net.minecraft.core.component.DataComponents
• net.minecraft.network.chat.Style
• net.minecraft.network.protocol.Packet
• net.minecraft.network.protocol.game.ClientboundBundlePacket
• net.minecraft.network.protocol.game.ClientboundSetEntityLinkPacket
• net.minecraft.network.protocol.game.ClientboundSetPassengersPacket
• net.minecraft.network.protocol.game.ClientboundSoundPacket
• net.minecraft.network.protocol.game.ClientboundUpdateAttributesPacket
• net.minecraft.network.syncher.SynchedEntityData
• net.minecraft.network.syncher.SynchedEntityData.Builder
• net.minecraft.resources.RegistryOps
• net.minecraft.server.MinecraftServer
• net.minecraft.server.network.ServerGamePacketListenerImpl
• net.minecraft.server.permissions.PermissionSet
• net.minecraft.tags.BlockTags
• net.minecraft.util.Mth
• net.minecraft.world.entity.Entity.RemovalReason
• and 54 more

On the roadmap: Minecraft's libraries and client API (0.2), Code next to data (0.3), Machines (0.4), Mixin (0.5)

In the author's words

Serverside mod/library that allows you to add balloons to your server!

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file Balloons-2.1.1+26.3.jar. The scan reads the mod's classes; it does not run them.